The Medical Biochemistry Page - Post-Translational Modification
Chemistry LibreTexts - N-linked Protein Glycosylation Begins in the ER
Comprehensive treatment. Highly recommended.
Wikipedia - Posttranslational modificationExcellent brief article.
Chemistry LibreTexts - O-linked Protein Glycosylation Takes Place Entirely in the GolgiChemistry LibreTexts - N-linked Protein Glycosylation Begins in the ER
Topic Resources
figures for classroom presentation